Comment by batmansmk

You can compile any C / C++ app down to wasm. In fact that’s the raison d’être of the technology: to provide a portable safe way to run binaries. Here is a link to Postgres in wasm for instance: https://supabase.com/blog/postgres-wasm. The way it works is that instead of outputting assembly for a given architecture in the backend compiler, it outputs wasm instructions that are designed to map all architectures, not like the jvm which is designed primarily for Java in the front end.